triqs_tprf::chi_wr_from_chi_wk

#include <triqs_tprf.hpp>

Synopsis

chi_wr_t chi_wr_from_chi_wk (chi_wk_cvt chi_wk)

Parallell Fourier transform from \(\chi_{\bar{a}b\bar{c}d}(\omega, \mathbf{k})\) to \(\chi_{\bar{a}b\bar{c}d}(\omega, \mathbf{r})\)

Computes

\[\chi_{\bar{a}b\bar{c}d}(\omega, \mathbf{r}) = \mathcal{F}_{\mathbf{k} \rightarrow \mathbf{r}} \left\{ \chi_{\bar{a}b\bar{c}d}(\omega, \mathbf{k}) \right\}\]

Parameters

• chi_wr Generalized susceptibility \(\chi_{\bar{a}b\bar{c}d}(\omega, \mathbf{k})\)

  in imaginary time and momentum space.

Returns

Generalized susceptibility \(\chi_{\bar{a}b\bar{c}d}(\omega, \mathbf{r})\)

in Matsubara frequency and real space.